Multithrow switch.



G. W. HART.

MULTITHROW SWITCH.

APLPLIOATION FILED MAR. a, 1911.

1,014,300. Patented Jan. 9, 1912.

3 SHE-LTSSHEET 1.

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MULTITHROW SWITCH.

APPLICATION FILED MAR. s, 1911.

1,014,300. Patented Jan. 9, 1912.

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MULTITHROW SWITCH.

APPLIOATION FILED MAR. s, 1911..

1,014,300, Patented Jan 9, 1912.

s SHEETS-SHEE T a.

' @QIHHIHII Flfii I n Iii mum w-INIIIIIIIIIIIIIILNQQQQ 5111K vvfovUNITED STATES, PATEN T oFm-on GERALD W. HART, OFiWEST HARTFORD,CONNECTICUT, ASSIGNOB TO THE HART MAN: UIACTUBING COMPANY, 01 HARTFORD,CONNECTICUT, A CORPORATION OF-NEW JERSEY.

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Specification of Letters Patent.

Patented Jan. 9,1912.

To all whom it may concern:

Be it known that I, GERALD W. HART, a citizen of the United States,residin at West Hartford, county of Hartford, tate of Connecticut, havemvented certain new and useful Improvements in Multithrow Switches, ofwhich the following is a full, clear, and exact description.

My invention relates to multl-throw switches, and has for its object toproduce a remote controlled multi-throw switch.

It further has for its object to produce a.

multi-throw switch having laterally displaced contacts with which aswitch arm, movable relativel to its support, is adapted to make aselecte engagement.

The following is a description of an embodiment of my invention,reference being had to the accompanying drawings, in which- Figure 1 isa plan view. Fig. 2 is a front elevation. Fig. 3 is a section on theline m-a: Fig. 1. -Fig. 4 is an end elevation, parts belng broken away,and other parts being shown in section. Fig. 5 is a section on the lineyy Fig. 2. Fig. 6 is a detail. Fig. 7 is a side view of the detail ofFig. 6,

art being shown in section on the line za ig. 6. Fig. 8 shows a detailof a guide. Fig. 9 is a diagram of circuits.

Referring more particularly to the drawings, 1 is a base on which aremounted four pairs of contacts 2-2, 33, 4-4, 5-5.

6 is a casting of iron, or other magnetic material, having three coilcavities, in two of which are located switch closing solenoids 7 7, andin the other of which is located a detent releasing solenoid 8. 9 is amagnetic cover closing said openings, and having three perforations.Through two of these perforations extend two magnetic cores 1010, whichare connected to a cross bar 11. This cross bar is guided b two tubes12, and two headed rods 13, which work in guide openings in the casting6. Within the tubes 12 are springs 14 which normally tend to raise thebar 11. The heads of the rods 13 limit the upward throw of the bar 11. Asliding plate or carriage 15 is secured to the bar 11 by screws 16. Thisslidin plate carries two U-shaped switch arms 1 17, which. are insulatedtherefrom and which terminate in laminated portions 18-18 each adaptedto engage two adjacent pairs of contact plates, one pair at a time.

the arm is in upright position, is -'imme-- diately over a projection 24secured to the casting 6. These two projections 23 and 24 are embracedby the ends of a spring 25 mounted on the support 26 of'the arm 21 so asto retract the arm 21 whenever it-is moved in either'direction from thevertical position in the ordinary manner of push-button switches. Thehub ofv the arm 22 has two lateral'(projections 27, to which are pivotedsolenoi cores 28, the pivot slots as shown at 29 being slightlyelongated. The arms carry auxiliar pins 30 working in slots 31, whichmaintaln the pivots of the armatures 28 in the same vertical linewhatever may be the position of the arms 27, thus securing a rectllinealmovement of the cores, the action being that described in my Patent No.

828,739, granted August 14, 1906. Mounted termediate member of a clutch.Depending I from the cover 9, and in line with this projection, is astationary abutment 34 having a shoulder 35. Within the intermediatemember 33 is a second and movable abutment 36, having a recess 37. Thespring 38 tends to make this movable abutment 36 move downwardly. Theintermediate member has a plurality of perforations in which are locatedball detents 39, which, when the parts are in position shown in'Fig. 3,are contained in the perforations in the intermediate member and therecess 37, and when the parts are depressed, are contained within theperforation in the intermediate member and the recess formed by theshoulder 35. When the parts are in this last named position, the spring38 forces the movable abutment 36 downward so as to force the ballsoutward beneath the shoulder 35. The movable abutment 36 has a downwardprojection 40. Benea'th this projection is a movable armature 41 whichis attracted by the releasing solenoid 8. When the switch is closed, theprojection 40 comes in close proximity to the armature 41, so that whenthe armature 41 is raised by the solenoid 8,

the movable-abutment 36 is raised until the recess 37 comes opposite thedetent 39, whereupon the parts become .unlocked and the switch opens byreason of the action of the springs 14. The movable abutment can also belifted manually b the knob 42 so as to unlock the switch an permit it toopen.

Fig. 9 shows one arrangement of the circuits, being the preferredarrangement for the switch when used on 110 volt circuits. As hereshown, the coils 77 are connected to the mains M-M in multiple. Thecoils 3232 are connected in multiple through the switches 4343, and eachof the coils 32-432 is connected in series with both of the coils 77.The releasin coil 8 is connected across the mains M and in series with alocal circuit controller 44. The operation of the switches is asfollows: Assuming that the switch is open, as shown in full lines inFig. 2, if the local circuit controller 43 is closed, the coils 32 and7-7 are energized, with the result that the cores 10 are drawn downward,and at the same time the arm 21, by the action of the coil 32, is thrownto the left, thereby moving the plate 15, together with the switch arms1717 to the left so as to make engagement with the circuit terminals orcontacts 3-3 and 5 -5, in which position they are held by the balls 39.If then the local circuit controller 44 is closed, the coil 8 isenergized and the armature 41 lifted so as to engage the projection 40and lift the movable abutment 36, unlocking the switch so as to permitthe springs 14 to open it.' If now the local circuit controller 43 isclosed, the coil 32, together with the coils 77' are energized, closingthe switch with the switch arms in engagement with the circuit terminalsor contacts 22' and44. In order .to guard against the switch arms 17-417coming down without moving to either the .right or left, as, forinstance, on account of the short circuiting of one of the coils 32-32,I mount a stop guide 45 upon the side of the casting 6, and provide theplate or carriage 15 with an anti-friction roller 46 adapted toengagewith the stop guide 45.

If, when one of the local circuit controllers '4343' is closed, theplate 15 is not moved in either direction, the roller 46 engaging thetop of the stop 45 will prevent the switch from closing. If, however,the late 15 has moved in one direction or the ot er, but has not movedthe full dista ce, the inclined upper surface of the stop 55 will insureits proper movement before t e switch is completely closed.

In order to omit unnecessary complicating details, I have not shown ordescribed herein the means for interrupting the controlling circuits inwhich the local circuit controllers 43--43' and 44 are included. Thespace 47 below the coil 8 provides for such an auxiliary circuitinterrupter, the details of. which are shown in my copending applicationSerial No. 570,693, filed Jul 7th, 1910. This circuit interrupter,although of value in connection with my present switch, does not form apart of the invention embodied therein.

As will be evident to those skilled in the art, my invention permits ofbeing embodied in various modified forms, which will leave it within thescope of the appended claims. The form shown, however, is the formpreferred by me.

What I claim is:

1. In a multi-throw switch, the combination of a base, two laterallydisplaced contacts thereon, a support movable toward and from said base,a carriage movably mounted on said support, a switch arm on saidcarriage and moving therewith so as to engage either one of saidcontacts, means for moving said support toward said base, and means forshifting said carriage thereon.

2. In a multi-throw switch, the combination of a base, two laterallydisplaced con tacts thereon, a support movable toward and from saidbase, a carriage movably mounted on said support, a switch arm on saidcarriage and moving therewith so as to engage either one of saidcontacts, electromagnetic means for moving said support toward saidbase, and electromagnetic means for shifting said carriage thereon.

3. In a multi-throw switch, the combination of a base, two laterallydisplaced contacts thereon, a support movable toward and from 'saidbase, a carriage movably mounted on said support, a switch arm on saidcarriage and moving therewith so as to engage either one of saidcontacts, electromagnetic means for moving said support toward saidbase, electromagnetic means for shifting said carriage thereon, and adetent for holding said switch in closed position.

4. In a multi-throw' switch, the combination of a base, two laterallydisposed contacts thereon, a support movable toward and from said base,a solenoid mounted on said base, a core connected to said supportand-entering said solenoid, a carriage movably mounted on said support,a switch arm on said carriage and adapted to engage either of saidcontacts according to the position of said carriage, electromagneticmeans for shifting said carriage upon said support, a local circuitcontroller in series with both the said electromagnetic means and saidsolenoid, a detent for holding said switch in closed position, andelectromagnetic means for releasing said detent.

5. In a multi-throw switch, the combination of a. base, a switch closinsolenoid mounted thereon, a support a ove said solenoidhaving adepending core, a spring normally tending to move said support tion of abase, two laterally disposedcontacts thereon, a support movable towardaway from said base, a carriage movably mounted on said support, twoswitch arms secured to said carriage, two laterally disposed circuitterminals on said base for each of said arms, electromagnetic means forshifting said carriage, a detent for holding said switch closed,electromagnetic. means for releasing said detent, local circuits forsaid electromagnetic means and solenoid, and local circuit controllersin said circuit.

6. In a multi-throw switch, the combination of a base, a switch closingsolenoid mounted thereon, a support above said solenoid having adepending core, a spring normally tending 'tomove said support away fromsaid base, a carriage movably mounted on said support, two switch armssecured to said carriage, two laterally disposed circuit terminals onsaid base for each of said arms, electromagnetic means for shifting saidcarriage in one direction, electromagnetic means for shifting saidcarriage in the other'direction, a detent for holding said switchclosed, electromagnetic means for releasing said detent, local circuitsfor said electromagnetic means and solenoid, and local circuitcontrollers in said circuit.

7. In a multi-throw switch, the combination of a base, two solenoidsthereon, a sup- .port above said solenoids adapted to move toward andfrom said base, two cores connected to said support and entering saidsolenoids, spring means for retracting said support, a carriage movably-mounted on said support, a-pluralit'y of switch arms on said carriage,two laterally disposed circuit terminals for each switch arm mounted onsaid base, a detent for holding said switch in closed o'sition,electromagnetic means for controlling the position ofsaid carriagerelative to said support, and electromagnetic means for releasing saiddetent.

8, In a. multi-throw switch, the combinaand from, said base, a solenoidmounted on said base, a core connected to said support, and enteringsaid solenoid, a carriage movably mounted on said support, a'switch armon said carriage and adapted to engage either 'of said contactsaccording to the .po-'

sition of said carriage, electromagnetic means for shifting saidcarriage upon said support, a local clrcuit controller in series withboth the said electromagnetic means and said solenoid, a detent forholding said switch in closed position, electromagnetic means forreleasing said detent, and a' stop adapted to-engage said carriage in aposition intermediate to said two terminals.

9. In a multi-throw switch, the combination of a base, two laterallydisposed contacts thereon, a support movable toward and from'said base,a solenoid mounted on said base, a core connected to,said support andentering said solenoid, a carriage movably mounted on said support, aswitch arm on said carriage and adapted to engage either of saidcontacts according to the position of said carriage, electromagneticmeans for' shifting said carriage upon said support, a 1

local clrcuit controller in series with both the said electroma neticmeans and said solenoid, a detent or holding said switch in closedposition, electromagnetic means for releasing said detent, and a guidepreventing the engagement of said switch arms with said terminalssimultaneously. 10. In a multi-throw switch, the combination of a base,two laterally disposed contacts thereon, a support movable toward andfromsaid base, a solenoid mquntedon said base, a core connected to saidsupport and entering said solenoid, a carriage movably mounted on saidsupport, a switch arm on said carriage and adapted-to engage either 'ofsaid contacts according to the position of GERALD W. HART.

witnessesf Y J. H. E "J. B. SMITH...

